Intake manifold and fuel vaporizer



Dec. 14, 1926. 1,610,541

J. M. WILLIAMS, JR

INTAKE MANIFOLD AND FUEL VA PORIZER Filed Oct. *7, 1922 I A /6 1 22 2 LM IQL m 2 W 3 w 5mm Patented Dec. 14, 1926.

JOHN M. WILLIAMS, JR., 015 DAYTON, OHIO.

INTAKE MANIFOLD AND FUEL VAPORIZER.

Application filed October 7, 1922. Serial No. 593,124.

,in the arrangement and combination of parts which -will be hereinafter described and claimed and from which further objects willbe apparent. K

In the drawing Fig. 1 is aplan view of one embodiment of my invention, partly in section.

' Fig. 2 is a rear elevation thereof. Fig. 3 is a rear sectional-elevation take on the line 3 -3 of Fig. 1 andlooking in the direction of the arrows, and a Fig. 4 is a'view similar to Fig. 1 showing a modified form of the invention.

To an internal combustion engine of.

any plural number of cylinders (in the present instance, an engine of fourcylinders is shown) is attached in any well known manner, a hot-spot manifold, generally designated 12. This manifold consists of four delivery tubes 14 of equal length connected directionally about a vaporizer generally designated 16 in the order of firing of the engine cylinders for a-purpose hereinafter described. The tubes 14, are each provided with flanges 18 through which securing means 20 are passed to secure a baffle plate 22 which has a number of involute ridges 24 running from the center thereof and adapted to turn a stream of fluid substantially backward upon itself as well as give it a swirling motion. A fuel supply pipe 26 from the carbureter has flanges 28 through-which securing means 30 pass into the walls of an exhaustpipe or an exhaust, by-pass 32, 32 which is secured to the baflie 22 by means of flanges 34 and stud bolts or screws 36. Between'the exhaust pi e 32 and bafiie 22 in the annular chamber ormed by the exhaust plilpe and between the exhaust pipe and the el sn 1 pipe 26 is clam ed a vaporizer member made of a metaFhaving a high coefficient of conductivity and arranged to form a chamber 40 between the bafile 22 and the supply pipe and forming a communicating passage between'the supplypipe and the intake tubes 14. This vaporizer 38 1s lapped back and forth upon itself to form I I a number of annular recesses in order to catch heavy gas particles and vaporize them. It also increases the heating space. The

battle member 22 has orifices 42 which have walls diverging in the direction of flow of the gaseous fuel.

' Fuel as vaporized by the carbureter. is supplied through the pipe 26 and upon suction of a cylinder the gas is deflected by the baflie 22 back upon itself and at the same time given a whirling motion by the 'involute flanges 24. Shouldthere be unvaporized particles of fuel in the gas the centrifugal action of the whirling vapor will tend to throw such particles out against and'into the annular recessesin the walls of the vaporizer 38 there to be completely vaporized by the heatfrom the exhaust which is readilyconducted by the metal of which the vaporizer is composed. In order to increase the whirl of the gases and thus the centrifugal force, I have arranged the intake pipes to supply the cylinder charges in. rotation, 1. e. 1n accordance with the firing order. The engine shown will have a'firing order of 1, 4, 3, 2 and the intake pipes will be arranged as .shown'in Fig. 2 in accordance therewith, so

that they suck successively in the direction of initial rotation of the gases. Each pipe 14 is made of the same length in order to provide a more equal distribution of the fuel.

In Fig. 4 I have shown a modification wherein the gases flowing toward the engine are swirled by impingingupon a battle and the heavy particles deflected into annular recesses 62 in the vaporizing member 58. The intake pipes 64, 64 may be arran ed in the same manner as those shown in ig. 2 to increase the-jl whirling effect. The ex terior surface of the vaporizer 58 may be abutted in intimate contact with a flat on the exhaust manifold for indirect conduction of heat therefrom. What I claim is:

1. In a. vaporizing device for use in a fuel supply system of internal combustion engines, means interposed in the fuel passageway between the carburetor and intake ports of sand engine for vaporizing unvafiorized fuel particles comprising, a baflie in said passageway having annular recesses,

arranged at right angles to the resulting path of said particles from said battle, and means to heat said heater means.

2. In combination in a fuel supply system for use in internal combustion engines, means interposed between the carburetor, and the inlet ports of said engine for vaporizing unvaporized fuel, intake pipes of equal length leading from said vaporizing means to said inlet ports, a fuel supply pipe leading from the carburetor to said vaporizing means, a bafile in said vaporizing means interposed between said intake and supply pipes to direct gaseous fuel at right angles to its incoming path, means integral with said battle for whirling said fuel, heater means disposed at right angles to the path of flow of fuel from said baflle means and having recesses therein, and means for heating said heater means, said intake pipes being connected to their respective cylinders in such order as to successively add to the whirling impulse given said fuel.

3. In combination, in an intake manifold for internalcombustion engines, a fuel supply pipe leading from a carburetor of said engine into an annular delivery chamber, said delivery chamber having a baflie therein disposed at right angles to the incoming fuel path, involute directional vanes on said baifie, said delivery chamber walls having annular recesses therein and constructed of a material having a high co-efiicient of conductivity, means for heating said Walls, and cylinder intake pipes leading from said chamber to the intake ports of said engine and disposed transversely to the resultin direction of flow of said fuel from sai bafile.

In testimony whereof I aflix my signature JOHN M. WILLIAMS, JR. 

